1. Kinetic vs Potential
Classify the following as either potential or kinetic energy.
Chemical bonds in sugar
Potential
Rolling bowling ball
Kinetic
Stretched rubber band
Pie perched on a peak

2. KE & PE Calculations
What is the kinetic energy of a 3 kg ball that is rolling at 2 m/s?
𝐾𝐸= 1 2 𝑚 𝑣 2 = 1 2 ∗3∗ 2 2 =6𝐽
What is the potential energy of a 5 kg brick on a 20 m high platform?
𝑃𝐸=𝑚𝑔ℎ=5∗9.81∗20=981𝐽
A bell that weighs 200 N hangs in a 100 m tall tower. Calculate the bell’s potential energy.
𝑃𝐸=𝑤ℎ=200∗100=20000𝐽
A car is traveling with a velocity of 40 m/s and has a mass of 1200 kg, what’s the car kinetic energy?
𝐾𝐸= 1 2 𝑚 𝑣 2 = 1 2 ∗1200∗ 40 2 =960000𝐽

3. Forms of Energy Energy that travels on electromagnetic waves
Energy stored in a charged particle within an electric field
Energy possessed by an object or system due to the movement of particles within the object or the system
Energy that is associated with vibrations of matter
Energy possessed by an object due to its motion or its position
Energy stored in the bonds of atoms and molecules
Radiant light and heat from the Sun harnessed
Type of energy generated in nuclear reactions
Chemical Energy
Nuclear Energy
Mechanical Energy
Radiant Energy
Thermal Energy
Sound Energy
Electrical Energy
Solar Energy

4. Energy Transfer Diagram
What’s the energy input?
Electrical Energy
What’s the energy output?
Light Energy

5. Sankey Diagrams
Add the missing figures to the diagrams below. 15 60 25